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[" Marks - "200M(50" questions "times4M)],[" 1."A" stress of "3.18times10^(8)N/m^(2)" is applied to a steel rod "],[" of length "1m" along its length.Its young's modulus is "],[2times10^(11)N/m^(2)" ,then the elongation produced in the "],[" rod in "mm" is "],[[" a) "3.18" b) "6.38," c) "5.18" d) "1.59]]

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